APA (7th ed.) Citation

Wagner, R., Wagner, C., & Nuitter, C. (2002). Correspondance. Mardaga.

Chicago Style (17th ed.) Citation

Wagner, Richard, Cosima Wagner, and Charles Nuitter. Correspondance. Sprimont: Mardaga, 2002.

MLA (9th ed.) Citation

Wagner, Richard, et al. Correspondance. Mardaga, 2002.